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which of the following reactions is irreversible 2KClO3 -> 2KCl + 3O2 or Fe3+ + SCN -> Fe(SCN)2+ ...
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this thread is made to share ur imp information so that others may be benefited ...
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Q2 total symmetry(plane of symmetry + axis of symmetry) present in benzene molecules is? a) 3 b) 4 c) 6 d) none ...
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hi evrione in this forum i will try to put some imp chem Q on a regular basis most of the q will be thought provoking & conceptual but please do tell if they are too easy i will add the Qs in the second post and other things ...
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well guys it's only testing your analytical skills partly and some chemistry skills . read the first passage carefully.and answer it's easy . yet gave. and second one organic is nice. try it . *Image* passage for 1st @ rom te ...
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Good Obj. Qn(s)... Needed to clarify & verify my answers, 'coz i don't have the list of correct ones. SINGLE ANSWER CORRECT *Image* *Image* MULTIPLE ANSWERS CORRECT *Image* Do post the answers u all got. ...
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Peopl. think polymer is concept less topic if u too think so hav a look at it Assertion:Nylon 6,6 is a copolymer Reason: a copolymer is one that is build using two monomer, in case of nylon 66 , 1,4 butane-dicarboxylic acid i ...
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These are few questions asked by external examiner in our school in chem viva: 1. Chem formula of Sindoor. 2. Compound used for cleaning earrings.. 3. sag(spinach) me haldi (turmeric) kyun nahi dalte.. :D [3] me have chem pra ...
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Q1. When we take high concentration of strong base in a non-ionising solvent, bimolecular mechanism are favoured and predominant mechanism is (a) SN2 (b) E2 (c) AN1Ar (d) E1CB Q2. In the reaction 2-Bromopropane ------> (Na ...
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Give structure of H4P2O5. How to distinguish between Aniline and N-methylaniline? ...
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iron crystallizes in fcc lattice *Image* ...
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What is the effect of pressure on melting pt of ice? Shouldnt an increase in pressure increase the melting point? having a great controversy over this!plz answer. ...
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The two functional groups present in a typical carbohydrate are : (1) -OH and -COOH (2) -CHO and -COOH (3) > C = O and - OH (4) - OH and -CHO which is correct i think 3 & 4 both are correct ...
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Solid sodium bicarbonate was placed on a strip of pH paper. The colour of the strip - (a) turned blue (b) did not change (c) turned green and suddenly yellow (d) turned light pink ...
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I am starting this thread where there will be all the exceptions in chemistry.... plz post here... the exceptions in chemistry u know....grow it up...it may b helpful... i m starting with a simple one....... AgCN is a sparing ...
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1.The hydride which does not react with water a)NH3 b)PH3 c)DIBORANE d)AsH3 2.WHICH ONE IS THE STRONGEST BASE? a)OH- B)HS- c)HSe- d)HTe- 3.GIVE PRODUCT(S). otho-chloro-toluene..REACTS IN PRESENCE OF ..sodamide and liq.ammonia ...
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find the atoms having same no of s and p electrons means no of electrons in s orbital=no of electrons in p orbital ...
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i m too weak at Chemistry... actually something because of which i won't be selected in JEE is just this chemistry... especially the organic part... our chem. teacher was going good with chem but got transferred from our FIIT ...
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i have dbt regarding structures. *Image* ...
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i need help in organic and inorganic can you please post the chapters in decreasing order of importance (or say the most important chapters in both please) please reply fast ! ...
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wat is exchange energy & with ex. ...
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PERIODIC TABLE:-Name the group having metal,nonmetal,liquid as well as gas at room temperature ...
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Q1. Which shows more donor properties: NF3 or PF3? EXPLAIN. Ans PF3..can't find the reason anywhere.. Q2. Give reasons why cation vacancies in some crystals make them good catalysts. Q3. Explain why: (a) TiCl2 is a high melti ...
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Metal X is singing a song for non metal Y I ate less protons than what u ate, Our atomic number add upto twenty eight, WIth AgNO3, our salt forms a precipitate. Non metal sings back: Beware this precipitate is black not white ...
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how many electrons in Zn(atomic number 30) satisfy the given equation n+L =2m+3s+1 ...
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Ques 1) A body centred cubic lattice is made up of hollow spheres of B. Spheres of Solid A are present in hollow spheres of B. Radius of A is half of radius of B. What is the ratio of the total volume of spheres of B unoccupi ...
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IN SALT ANALYSIS wat r d gp. detecting & confirmatory test for 1) Bi3+ 2)Cr3+ 3)Ca2+ ...